* path.cc (symlink_info::check): Drop PC_KEEP_HANDLE flag for
	unrecognized reparse points as well.  Reorganize code and comments
	handling reparse points for better readability.
	* acconfig.h (_WCHAR_ORIENT): Undef
	* newlib.hin (_WCHAR_ORIENT): Undef
	* configure.in (--enable-newlib-wchar-orient): New option.
	* configure: Regenerated.
	* libc/configure.in (--enable-newlib-wchar-orient): New option.
	* libc/configure: Regenerated.
	* libc/stdio/Makefile.am (NEWLIB_WIDE_ORIENT): Use.
	* libc/stdio/Makefile.in: Regenerated.
	* libc/stdio/local.h (ORIENT): Use _WCHAR_ORIENT to control
	the definition. Add alternative definition.
	* libc/stdio/vfprintf.c (__sfputs_r, __sprint_r): Use _WCHAR_ORIENT
	to control the wide char output.
Merge branch 'cygwin' into msys2-1.0-dev